.show-textarea {
  width: 100%;
  height: 100%;
  position: relative;
}

.show-textarea,
.show-textarea textarea {
  font-family: inherit;
  color: inherit;
  font-size: inherit;
}

.show-textarea textarea {
  width: calc(100% - 4px);
  height: calc(100% - 4px);
  font-family: inherit;
  color: inherit;
  font-size: inherit;
  border: none;
  resize: none;
  z-index: 1;
  float: left;
}

.show-textarea .hidden-textarea{
  z-index: -1000;
  position: absolute;
  overflow: hidden;
  height: 0 !important;
}

.show-textarea textarea.textarea-autosize{
  overflow: hidden;
}